*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}


.content{
    width: 85%;
    margin: 0 auto;
}

/**
头部
 */
.content .top{
    width: 100%;
    height: 150px;
    display: flex;
    justify-content: space-between;
}
.left_top{
    width: 35%;
    display: flex;
    justify-content: center;
    align-items: flex-end;
}
.left_top a{
    text-decoration: none;
    width: 40%;
    bottom: 0;
}

.left_top a img{
    width: 100%;
    font-size: 0px;
}
.left_top span {
    font-size: 60px;
    color: #7F8386;
    display: inline-block;
}

.right_top{
    display: flex;
    align-items: flex-end;
}
.right_top a{
    margin:0 5px;
    text-decoration: none;
    font-size: 18px;
}

/*中间部分*/
.middle{
    margin-top: 10px;
    width: 100%;
    border: 1px solid black;
    padding: 15px 20px;
    color: #656565;
    display: flex;
    flex-flow: column nowrap;
    justify-content: space-around;
    align-items: center;
    align-content: stretch;
}
.middle > div{
    margin: 5px 0;
}
.search form input{
    width: 50px;
}
.book_info{
    width: 100%;
    display: flex;
    justify-content: space-around;
}
.book_info .info{
    width: 22%;
    text-align: center;
    border: 1px solid darkgray;
    padding: 10px;
}
.book_info .info img{
    width: 65%;
}

